Of the three competitive moves of the powerlifter trio, deadlift is the most difficult in terms of the number of details required to be accounted for, and none of them is unimportant. Let's look at what the deadlift consists of and the athlete himself during its execution.
The first and most important thing you need to know and be able to determine more or less accurately is the General center of gravity of the body (GCGB). Everything else will revolve around this concept. The question deadlift GCGB fundamental for the reason that determines how a person will keep balance when starting position in the deadlift, as the deadlift is the only one of three competitive movements which, firstly, runs with zero momentum (the bar is motionless on the floor in a state of rest and her recovery is not preceded by the taking from racks), and second is single-phase – hoist is bottom-up and does not precede the lowering of the rod, and thirdly – the beginning of the lifting rod is not preceded by elastic deformation of the muscles, because it is not pre-stretch on the load: all this tells us one simple truth – 50% success or more will depend on the classes the starting position before starting the movement and, in General, the capabilities of the athlete to take a good body position at the start. Undoubtedly, to be able to develop maximum effort when lifting the bar from the floor, the athlete must be in perfect balance, that is, be as stable as possible on their feet. And here the jungle begins, because the balance of a person in a stationary position determines his General center of gravity, and it is, of course, different for everyone.
GCGB depends on many factors: gender, age, occupation, anthropometry, and many other things that we are not very interested in. In General, the GCGB consists of the masses of all parts of the body (arms, legs, torso, etc.), and the position of the GCGB will depend on the difference in the masses of the parts. It is believed that this is the average position of the GCGB with a fixed neutral position (straight stance)in the sacral spine. Most often, women have a lower GCGB than men, for objective reasons – the lower part of the body takes priority over the upper part in weight. From here, we can understand who and where the GCGB will shift depending on the type of activity, anthropometry, and so on. The rule is simple – the heavier the pelvis, the lower the GCGB and Vice versa. What does this knowledge give us? And the fact is that the lower the athlete's GCGB, the easier it will be for him to maintain balance at the moment of bending to the bar – a heavy pelvis will always be pulled back and it will be more difficult to fall forward. Therefore, athletes with a relatively low GCGB are not so harmful to a strong back tilt at the start, if this is necessary taking into account anthropometry (for example, short arms), because they are most likely not to fall forward. In contrast, athletes with a high GCGB have a harder time keeping their balance because they reach forward more when they bend over. This promises us two developments. In the first case, the athlete will ignore his high-set post and turn over on his toes when removing the bar, and from this position, as you know, you will not achieve much. And in the second, to still maintain balance, the athlete will have to take a more vertical position of the back and sit down more strongly, which will cause uncomfortable overstrain of the legs at the start, and overstressed muscles will not be able to develop maximum effort. If everything is really bad and you have short arms for a high GCGB, then you are the least lucky – it will be extremely difficult for you to take a neutral back position and you will have to bend very much. A strong tilt will impose the need to strongly pull the pelvis back in the name of maintaining balance, and the further away from the bar the pelvis, the higher the torque on the lower back, well, then you can guess.
According to my observations, well - "unclenched" triathletes most often begin to fall results in the draft. This is due to just the same shift of the GCGB up in view of the growth of the upper body mass, and also in view of its anchoring - any frequently performed exercises entail irreversible changes, such as the anchoring of the shoulder girdle (from frequent contractions of the muscles and fascia are shortened and coarsened). The pinned shoulder girdle does not allow you to open your chest sufficiently and fill your shoulder blades when taking the starting position in the draft. All this entails changing the angles of movement to not the most acceptable and, accordingly, a drop in results in deadlift. For the same reason, heavyweights set all-time records in deadlift using the classic style – in view of the increase in their own body weight, the size of the abdominal area also increases, which also shifts the center of gravity up and imposes the need to level this problem by removing the pelvis from the bar, which is best achieved just by the classic style of deadlift. Another problem is that not every heavyweight athlete can get into a full-fledged sumo, but they manage to pull a lot at the same time.
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